CN108709978A - A kind of self-compacting concrete self-compacting ability comprehensive tester and its test method - Google Patents
A kind of self-compacting concrete self-compacting ability comprehensive tester and its test method Download PDFInfo
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- CN108709978A CN108709978A CN201810459125.9A CN201810459125A CN108709978A CN 108709978 A CN108709978 A CN 108709978A CN 201810459125 A CN201810459125 A CN 201810459125A CN 108709978 A CN108709978 A CN 108709978A
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- self
- compacting
- concrete
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- autodensing
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- 239000011376 self-consolidating concrete Substances 0.000 title claims abstract description 27
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 239000004567 concrete Substances 0.000 claims abstract description 36
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000011017 operating method Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 24
- 238000000034 method Methods 0.000 abstract description 9
- 238000002474 experimental method Methods 0.000 abstract description 4
- 238000011156 evaluation Methods 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000005056 compaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of self-compacting concrete self-compacting ability comprehensive tester and its test methods, this method is detected autodensing concrete almixture using self-compacting ability comprehensive tester, detection method is that the mixture of certain mass is filled V funnels, valve is opened after standing 10s, mixture is set to pass sequentially through V funnels and the transverse groove with reinforcing bar grid, it is discharged into splicing container, stop splicing after opening valve 40s, with the mix amount of substance of discharge and the ratio of gross mass, i.e. concrete discharge rate P evaluates its self-compacting ability.The present invention can go out the fillibility, clearance through and education resistance of self-compacting concrete by once testing overall merit, relatively at present using the method for the test of many times combination evaluation self-compacting abilities such as divergence experiment, V funnel testings and J ring tests, simple and practical, operability is strong, accuracy higher.
Description
Technical field
The invention belongs to field of civil engineering, refer in particular to a kind of test side of overall merit self-compacting concrete self-compacting ability
Method.
Background technology
Self-compacting concrete, which is one kind, having high fluidity, uniformity and stability, vibrates without external force when pouring, can
The concrete of templatespace is flowed and is full of under Gravitative Loads.The appearance of self-compacting concrete is considered mixed in recent decades
A most revolutionary much progress in solidifying geotechnique's journey, it improves the construction environment of concrete, reduces labor cost, carries
High construction efficiency.
The self-compacting ability of self-compacting concrete is mainly reflected in fillibility, clearance through and education resistance, is to ensure that
The key of concrete pouring quality, how the self-compacting ability of effectively evaluating self-compacting concrete, it is mixed for carrying out self-compaction
Solidifying soil prepares particularly significant with the quality control in work progress.Currently, there are many Test model synthetic techniques both at home and abroad, such as collapse extension
Degree, L-type case, U-shaped case, Orimet methods, J rings, V funnel testings etc., but it is the self-compacting ability of overall merit mixture, usually
It needs to carry out test of many times to be evaluated, such as using slump flow test and expansion time experimental test self-compacting concrete mix
The fillibility of object tests its education resistance, and every examination with its clearance through of J ring divergence experimental tests with V funnel testings
The sequencing tested usually can also have an impact test result.Therefore, it is necessary to develop a kind of overall merit self-compaction coagulation
The test method of native self-compacting ability can test out the self compacting ability of autodensing concrete almixture by once testing
Can, simplify cumbersome operating procedure, improve the accuracy of testing result, improves working efficiency.
Invention content
The purpose of the present invention is to provide a kind of test method of overall merit self-compacting concrete self-compacting ability, the party
Method can cross the self-compacting ability of overall merit autodensing concrete almixture.
For the above-mentioned task of realization, technical solution proposed by the present invention is：
A kind of self-compacting concrete self-compacting ability comprehensive tester, by V funnels, transverse groove, reinforcing bar grid, splicing container and support
Bar forms, wherein：V funnels are fixed on above transverse groove side, and reinforcing bar grid are vertically installed among transverse groove, and supporting rod is fixed on
Lateral trench bottom；Another side bottom of transverse groove is equipped with splicing container.
In the present invention, the V funnel bottoms are by valve link slot to slot.
In the present invention, the V hopper capacities be 10L, upper port a length of 490mm, width 65mm, a length of 75mm of lower port,
Width is 65mm, and upper vertical height is 425mm, lower height 150mm.
In the present invention, a length of 400-600mm of transverse groove, width 250-350mm, a height of 100-150mm, the reinforcing bar
Grid are made of the spiral of 5 a diameter of 10-16mm, a height of 100-150mm, and reinforcing steel bar center spacing is 45-55mm.
In the present invention, the supporting rod totally four, two, left side is tilted to the left 30-60 °, and vertical height is 160-
200mm, a length of 350-450mm of splicing container, width 200-250mm, a height of 140-160mm.
The test method of self-compacting concrete self-compacting ability comprehensive tester proposed by the present invention, is as follows：
（1）Autodensing concrete almixture is prepared according to current standard, and is sampled；
（2）Self-compacting ability comprehensive tester and bucket are soaked, and inner wall should be then placed into smooth ground without bright water
On, keep the holding of self-compacting ability comprehensive tester horizontal, confirm whether V lower portions valve has been switched off, and weighs splicing appearance
The quality m of device1；
（3）Bucket with volume more than 10L, which is placed in, to be deserved to be called, after peeling, by step（1）Obtained autodensing concrete almixture
It is placed in bucket, mix is uniform, is packed into the autodensing concrete almixture slightly larger than 10L, weighs quality m2, then will be from close
Real concrete mix fills up V funnels, and with doctor blade, remaining autodensing concrete almixture is all refunded bucket
It is interior, weigh quality m3, it is careful not to that remaining autodensing concrete almixture is made to lose；
（4）V funnels top surface autodensing concrete almixture is struck off, after standing 10s, opens V funnel bottom valves, while using the second
When meter, splicing container is removed when 40s, weighs quality m4；
（5）Calculate the discharge rate P, % of autodensing concrete almixture：
。
In the present invention, overall merit self-compacting concrete self-compacting ability provides as follows：
（1）As P >=90, the self-compacting ability grade for evaluating autodensing concrete almixture is level-one；
（2）As 80≤P<When 90, the self-compacting ability grade for evaluating autodensing concrete almixture is two level；
（3）As 70≤P<When 80, the self-compacting ability grade for evaluating autodensing concrete almixture is three-level；
（4）Work as P<When 70, then evaluates autodensing concrete almixture and be unsatisfactory for self-compacting ability requirement.
The beneficial effects of the present invention are：The present invention can go out the filling of self-compacting concrete by once testing overall merit
Property, clearance through and education resistance, relatively at present using the test of many times combination such as divergence experiment, V funnel testings and J ring tests
The method for evaluating self-compacting ability, simple and practical, operability is strong, accuracy higher.
Description of the drawings
Fig. 1 is a kind of self-compacting concrete self-compacting ability comprehensive tester schematic diagram of the present invention.
Figure label：1, V funnels, 2, valve, 3, transverse groove, 4, reinforcing bar grid, 5, supporting rod, 6, splicing container.
Specific implementation mode
With reference to embodiments and attached drawing the invention will be further described, but it should be recognized that embodiment below
It is the present invention preferably example, not the present invention is imposed any restrictions, it is every according to the technique and scheme of the present invention to reality below
Any simple modification, change that example is made are applied, the protection domain of the technical solution of the application is belonged to.
Embodiment 1：As shown in Figure 1, a kind of self-compacting concrete self-compacting ability comprehensive tester, including V funnels 1, cross
To slot 3, reinforcing bar grid 4, splicing container 6 and supporting rod 5, V funnels 1 are fixed on transverse groove 3, and reinforcing bar grid 4 are vertically installed in transverse direction
Among slot 3, supporting rod 5 connects 3 bottom of transverse groove.
In the present invention, 1 lower end of V funnels is equipped with valve 2, and capacity is about 10L, upper port long 490mm, wide 65mm, under
The long 75mm in port, wide 65mm, upper vertical height 425mm, lower height 150mm.
The transverse groove 3 long 500mm, wide 300mm, high 100mm.
The reinforcing bar grid 4 are made of the spiral of 5 diameter 12mm high 100mm, and reinforcing steel bar center spacing is 50mm.
The supporting rod 5 totally four, two, left side is tilted to the left 30 °, and vertical height is 180mm.
6 volume of splicing container is 12L, long 400mm, wide 200mm, high 150mm.
Self-compacting concrete self-compacting ability test is carried out using this method, is as follows：
（1）C60 autodensing concrete almixture samples are taken out from concrete tank, are more than 20L；
（2）Self-compacting ability comprehensive tester, bucket and splicing container 6 are soaked, and inner wall should be then placed into flat without bright water
On whole ground, keep tester holding horizontal, confirm whether 1 lower part valve 2 of V funnels has been switched off, and weighs splicing container 6
Quality m1For 1.585kg；
（3）After bucket with volume more than 10L is placed in and deserves to be called peeling, by step（1）Obtained self-compacting concrete sample is mixed
It closes uniformly, is packed into the sample slightly larger than 10L, weighs quality m2For 25.325kg, sample is then filled up into V funnels 1, is scraped with scraper
It is flat, remaining sample is all refunded in bucket, quality m is weighed3For 1.352kg, it is careful not to that remaining sample is made to lose；
（4）1 top surface sample of V funnels is struck off, after standing 10s, bottom valve 2 is opened, while with manual time-keeping, waits for 40s time shifts
Splicing container 6 is opened, quality m is weighed4For 22.856kg；
（5）Calculate the discharge rate P, % of autodensing concrete almixture：
Therefore, the self-compacting ability grade for evaluating this vehicle C60 autodensing concrete almixtures is two level.
Sampling simultaneously has carried out V funnel testings to this vehicle C60 autodensing concrete almixtures by current standard, collapsing extends
Degree and expansion time experiment and J ring divergences experiment, testing result be V funnels by time 20.4s, slump flow test is
720mm, expansion time T500For 3.6s, J ring divergences are 705mm, show that this mixture meets wanting for self-compacting ability two level
It asks, illustrates that test method evaluation result using the present invention has accordance with existing examination criteria.
Claims (7)
1. a kind of self-compacting concrete self-compacting ability comprehensive tester, which is characterized in that by V funnels, transverse groove, reinforcing bar grid,
Splicing container and support bar group at, wherein：V funnels are fixed on above transverse groove side, and reinforcing bar grid are vertically installed in transverse groove
Between, supporting rod is fixed on lateral trench bottom；Another side bottom of transverse groove is equipped with splicing container.
2. self-compacting concrete self-compacting ability comprehensive tester according to claim 1, which is characterized in that the V leakages
Struggle against bottom by valve link slot to slot.
3. a kind of self-compacting concrete self-compacting ability comprehensive tester according to claim 1, which is characterized in that described
V hopper capacities are 10L, upper port a length of 490mm, width 65mm, lower port a length of 75mm, width 65mm, upper vertical height
For 425mm, lower height 150mm.
4. a kind of self-compacting concrete self-compacting ability comprehensive tester according to claim 1, which is characterized in that described
The a length of 400-600mm of transverse groove, width 250-350mm, a height of 100-150mm, the reinforcing bar grid by 5 a diameter of 10-16mm,
The spiral of a height of 100-150mm forms, and reinforcing steel bar center spacing is 45-55mm.
5. a kind of self-compacting concrete self-compacting ability comprehensive tester according to claim 1, which is characterized in that described
Supporting rod totally four, two, left side is tilted to the left 30-60 °, and vertical height is 160-200mm, and the splicing container is a length of
350-450mm, width 200-250mm, a height of 140-160mm.
6. a kind of test method of self-compacting concrete self-compacting ability comprehensive tester as described in claim 1, feature
It is to be as follows：
（1）Autodensing concrete almixture is prepared according to current standard, and is sampled；
（2）Self-compacting ability comprehensive tester and bucket are soaked, and inner wall should be then placed into smooth ground without bright water
On, keep the holding of self-compacting ability comprehensive tester horizontal, confirm whether V lower portions valve has been switched off, and weighs splicing appearance
The quality m of device1；
（3）Bucket with volume more than 10L, which is placed in, to be deserved to be called, after peeling, by step（1）Obtained autodensing concrete almixture
It is placed in bucket, mix is uniform, is packed into the autodensing concrete almixture slightly larger than 10L, weighs quality m2, then will be from close
Real concrete mix fills up V funnels, and with doctor blade, remaining autodensing concrete almixture is all refunded bucket
It is interior, weigh quality m3, it is careful not to that remaining autodensing concrete almixture is made to lose；
（4）V funnels top surface autodensing concrete almixture is struck off, after standing 10s, opens V funnel bottom valves, while using the second
When meter, splicing container is removed when 40s, weighs quality m4；
（5）Calculate the discharge rate P, % of autodensing concrete almixture：
。
7. the operating method of self-compacting concrete self-compacting ability comprehensive tester according to claim 6, feature exist
It is provided as follows in overall merit self-compacting concrete self-compacting ability：
（1）As P >=90, the self-compacting ability grade for evaluating autodensing concrete almixture is level-one；
（2）As 80≤P<When 90, the self-compacting ability grade for evaluating autodensing concrete almixture is two level；
（3）As 70≤P<When 80, the self-compacting ability grade for evaluating autodensing concrete almixture is three-level；
（4）Work as P<When 70, then evaluates autodensing concrete almixture and be unsatisfactory for self-compacting ability requirement.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109358183A (en) * | 2018-12-04 | 2019-02-19 | 毕节远大新型环保建材（集团）有限责任公司 | A kind of self-compacting concrete self-compacting ability comprehensive tester and its test method |
| CN110672455A (en) * | 2019-10-21 | 2020-01-10 | 武汉美好绿色建筑科技有限公司 | Self-compacting concrete homogeneity testing device and method |
| CN112611855A (en) * | 2020-11-16 | 2021-04-06 | 清华大学 | Self-compacting concrete working performance testing device and testing method |
| CN116289353A (en) * | 2023-03-02 | 2023-06-23 | 江苏科技大学 | Device for reducing filling layer self-compaction concrete filling segregation degree and operation method |
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| CN109358183A (en) * | 2018-12-04 | 2019-02-19 | 毕节远大新型环保建材（集团）有限责任公司 | A kind of self-compacting concrete self-compacting ability comprehensive tester and its test method |
| CN110672455A (en) * | 2019-10-21 | 2020-01-10 | 武汉美好绿色建筑科技有限公司 | Self-compacting concrete homogeneity testing device and method |
| CN110672455B (en) * | 2019-10-21 | 2022-09-30 | 武汉美好绿色建筑科技有限公司 | Self-compacting concrete homogeneity testing device and method |
| CN112611855A (en) * | 2020-11-16 | 2021-04-06 | 清华大学 | Self-compacting concrete working performance testing device and testing method |
| CN116289353A (en) * | 2023-03-02 | 2023-06-23 | 江苏科技大学 | Device for reducing filling layer self-compaction concrete filling segregation degree and operation method |
| CN116289353B (en) * | 2023-03-02 | 2023-12-19 | 江苏科技大学 | Device for reducing filling layer self-compaction concrete filling segregation degree and operation method |
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